from_variant is used at run time in 229 crates (of which 12 optionally). It is a direct run-time dependency in 2 crates. It's used at build time in 2 crates (0 directly). It's used only as a dev dependency in 13 crates.

Depender (with downloads and own rev deps) from_variant version
174K 128 swc_common ^0.1.6
17K 3 preset_env_base ^0.1.6